Question:
I need some general troubleshooting advice for resolving print problems.

Response:
Try the following:

Raster vs. Vector Modes - You may get more consistent results if your printer driver is set to use "Raster mode" for graphics. Note: not all printer drivers have this mode.

Dithering - Set your printer driverís Graphics/Dithering option to "Fine" or "Coarse" for best results when printing half-tone images. A setting of "None" will produce poor results.

600dpi - If you experience problems printing to HP LaserJet printers in the 600dpi mode, try switching back to 300dpi mode or, if equipped with a PostScript option, use the PostScript mode for 600dpi printing.

Printer Memory Issues using PDF format - If you encounter problems, such as a "Vmerror" printing to a PostScript Level 1 or 2 printer, it may be because the printer has insufficient memory available. Below are two possible solutions to this problem:

In the Acrobat Reader General Preferences dialog (select from the File>Preferences menu) you may choose to use Serif only or Sans only for font substitution. This frees up additional memory in the printer and increases the likelihood of successful printing.